Turbine-driven centrifugal pump



M. SPILLMANN.

TURBINE DRIVEN CENTRIFUGAL PUMP.

APPLICATION FILED NOV. 13. 1920.

1,481,190, Patented Oct. 10, 1922.

% %W M p Patented as. to, new.

insane at spice.

MAX SPILLMANN, OF RICHFIELD, NEW JERSEY, ASSIGNOR TO WORTHINGTON PUMP AND MACHINERY GORPORATION, A CORPORATION OF VIRGINIA.

TURBINE-DRIVEN CENTRIFUGAL PUMP.

Application filed November 13, 1920. Serial No. 423,888. 7

To. all whom it may concern.

Be it known that I, MAX SPILLMANN, a citizen of Switzerland, residing at Richfield, county of Passaic, and State of New Jersey, have invented certain new and useful Improvements in Turbine-Driven Centrifugal umps, fully described and represented in the following specification and the accompanying drawings, forming a part of, the

same.

This invention relates to improvements in certifugal pumps, and especially to pumps of this type driven directly by steam turbines, the turbine rotor and pump impeller being mounted upon a single shaft.

The object of this invention is to provide a cheap, compact and efiicient centrifugal pump having an increased capacity, thereby requiringfewer stages, and so arranged as to allow the use of a lighter-shaft.

In the accompanying drawing, forming a part of this specification, there is shown by way of illustration aside elevation of a two stage centrifugal pumpfwith its first stage shown in section, embodying: all the features of the invention in their preferred form, and this construction-will now be described in detail and the features forming the invention then specifically pointed out in the claims.

Referring to the drawing, this steam turbine driven centrifugal pump comprises preferably a turbine section A and a pump section B provided with abutting flanges C secured together in any suitable manner and supporting members E forming a support therefor.

Turbine section A encloses a suitable rotor and is provided with the usual steam inlet connection F and an exhaust connection Gr.

The pump section B comprises two stages H and I connected by connection J. In order to obtain increased capacity I preferably provide the first stage H with an-overhung impeller K to which the fluid passes from inlet connection L, the second stage I being of any suitable type and provided with discharge connection M. I am enabled to use a lighter shaft by providing a bearing P situated between the two stages of the pump and preferably supported on connection J by standard Q. When the pump is used in a direct driven unit as shown, I may advantageously provide a second bearing 0 for the shaft M outside and beyond the turbine A.

By means of this arrangement having an overhun first stage impeller, I am enabled to obtain a greatly increased capacity and pressure thereby requiring fewer stages. and

y the location of the bearings a lighter shaft can be used in a unit having relatively smaller dimensions.

What I claim is:

1. A centrifugal pump'unit comprising an overhung first stage impeller, a second stage adjacent to the first stage, a shaft common to both stages, driving means for said shaft arranged with the second stage between it and the first stage, and a bearing for the shaft between the first and second stages.

2. In a steam turbine driven centrifugal pump the combination with the turbine and its rotor, of a two stage centrifugal pump. a shaft common to the rotor and pump impellers', and two bearings for the shaft mounted one at the turbine end and outside the turbine and the other between the two stages of the pump.

3. In a steam turbine driven centrifugal pump the combination with the turbine and its rotor, of a two stage centrifugal pump, an overhung impeller on the first stage, a shaft common to the rotor and pump im pellers and two bearings for the shaft mounted one at the turbine end and outside the turbine and the other between the two stages of the pump.

In testimony whereof, I have hereunto set my hand.

MAX SPILLMANN. 

